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#6078237 - 12/11/15 08:40 AM New build
okierifleman Offline
Bird Dog

Registered: 04/14/12
Posts: 386
Loc: Houston
I just got my new 300WM out for the first time. This is the second build I have had done by Aaron Roberts at RP Rifles and I am very impressed.
Specs:

Trued 700 action with tac knowb
Bartlein 1:9 Sendero countour threaded and capped at 26''
Bedded in a McMillan M40
Badger bottom metal
All metal cerakoted in olive
Nightforce 20 MOA rail
I put a Kahles K6-24i in Badger rings



I ran the very first load development rounds through it this last weekend and was really impressed. All 3's-6's. 178 AMax and RL17 I havent noticed pressure yet so i am going to try and speed it up and see what happens



As a side note, the Thunderbeast that I run on it reduced recoil by 30-40% and sounds like a .22 Mag

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#6078259 - 12/11/15 08:53 AM Re: New build [Re: okierifleman]
SingleShot85 Offline


Registered: 05/27/09
Posts: 1750
Loc: S.A. and Kinney Co.
up
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#6078376 - 12/11/15 10:15 AM Re: New build [Re: okierifleman]
dee Offline
Extreme Tracker

Registered: 04/10/10
Posts: 4665
Loc: Red River way
Aaron builds a heck of a rifle. He's a pretty good shooter himself too.
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"A vote is like a rifle; it's usefulness depends on the character of the user" Theodore Roosevelt

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#6078412 - 12/11/15 10:35 AM Re: New build [Re: okierifleman]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
Wow, I really like that rifle. I like the classic camo coloring. And great choice in caliber!

Just be careful working up a max or near max load in the cold temps of winter time with R17. When the temps warm up, you could easily be over max and have high pressure signs with R17. Especially shooting suppressed. A suppressor will increase your pressures.
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#6078568 - 12/11/15 12:42 PM Re: New build [Re: okierifleman]
okierifleman Offline
Bird Dog

Registered: 04/14/12
Posts: 386
Loc: Houston
He does build a fine rifle. I actually took a 0-1000 yard class he put on this year and learned a lot.

Thanks Chad, something to ponder. I thought Alliant was working on the temperature sensitivity issues on their R seriaes?

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#6078635 - 12/11/15 01:17 PM Re: New build [Re: okierifleman]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Awesome rig

I'd load the sucker with a 210 Berger at H-1000 and let the big dog eat!
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#6078801 - 12/11/15 03:03 PM Re: New build [Re: okierifleman]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
Originally Posted By: okierifleman
I thought Alliant was working on the temperature sensitivity issues on their R seriaes?


they did. They came out with the R23, R26, R33, R50, and their Power Pro series of powders. The original R15, R22, and R17 are temp sensitive. The R17 is a double base, extruded powder, which makes it even ore temp sensitive. It's a great powder for increased speeds, but pressure sneaks up on R17 loads fast.
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#6083473 - 12/14/15 01:37 PM Re: New build [Re: okierifleman]
okierifleman Offline
Bird Dog

Registered: 04/14/12
Posts: 386
Loc: Houston
Well Chad, you are correct. I pushed it over book max this weekend. Still no sticky bold or flat primers, but, it went from 1/2'' avg to 1 1/2''avg. so back I go.

Have you ever used Retumbo in the 300WM?

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#6083596 - 12/14/15 02:30 PM Re: New build [Re: okierifleman]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
Originally Posted By: okierifleman
Have you ever used Retumbo in the 300WM?


Yes, but not for anything lighter than 225 grains. I use Retumbo for my Hornady 225 BTHP and the Berger 230's. Retumbo would be a little too slow for a 178 A-max. I'd lean towards R22 or H4831 burn rate, maybe H1000.
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Type 01 and Type 06 FFL

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#6083606 - 12/14/15 02:36 PM Re: New build [Re: okierifleman]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2579
I used 7797 with 190 accubond lr and have gotten good results

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#6083607 - 12/14/15 02:37 PM Re: New build [Re: Cleric]
ChadTRG42 Offline
THF Trophy Hunter

Registered: 09/16/09
Posts: 9433
Loc: Lewisville, TX
Originally Posted By: Cleric
I used 7797 with 190 accubond lr and have gotten good results


^^^ Great combo!
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Type 01 and Type 06 FFL

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#6083622 - 12/14/15 02:44 PM Re: New build [Re: ChadTRG42]
Cleric Offline
Veteran Tracker

Registered: 03/11/12
Posts: 2579
Originally Posted By: ChadTRG42
Originally Posted By: Cleric
I used 7797 with 190 accubond lr and have gotten good results


^^^ Great combo!



Wonder who steered my in that direction confused2

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#6083712 - 12/14/15 03:37 PM Re: New build [Re: okierifleman]
okierifleman Offline
Bird Dog

Registered: 04/14/12
Posts: 386
Loc: Houston
Chad, I was more referring to stepping up to the 210 Berger. I run Retumbo in my 6.5-284 with 140 Hybrids and get really good results

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#6208408 - 03/03/16 01:14 PM Re: New build***Before and after**** [Re: okierifleman]
okierifleman Offline
Bird Dog

Registered: 04/14/12
Posts: 386
Loc: Houston
After shooting this gun for the last couple of months, I just could not warm up to the M40 on here. McMillan had this A5 in stock. All they had to do was the inlet. This is one of their new colors, its called Forest Spectre. Got it bedded in and will be trying it out tomorrow. I really like how well the color matched up with my cerakote.


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#6208427 - 03/03/16 01:35 PM Re: New build***Before and after**** [Re: okierifleman]
FiremanJG Offline
THF Celebrity

Registered: 12/16/08
Posts: 17893
Loc: Wolfe City, TX
Love an A-5, and that color looks very nice.
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